Transmission Fluid Temperature (TFT) Sensor

DESCRIPTION
- The Transmission Fluid Temperature (TFT) sensor is a thermistor-type sensor that varies a reference voltage signal. The resistance in the TFT varies with temperature. The Powertrain Control Module (PCM) monitors the voltage signal across the TFT, and uses this information to determine the transmission fluid temperature.
- The TFT is located on the main control body wiring harness assembly.
- The PCM uses the TFT signal to help determine shift scheduling, torque converter clutch operation and Electronic Pressure Control (EPC).

SYMPTOMS:
- High EPC pressure, that results in harsh shifts or harsh engagements.
- TCC engagement and stabilized shift schedules begin too soon after cold start.

DIAGNOSTIC TROUBLE CODES:
P0712, P0713, P1711, P1783